I used to be heavily into car stereo. The MB Quarts are very hard to beat unless you go esoteric (horns under dash, etc.), and are pretty reasonably priced. They can have a tendancy to be bright in car at around 8kHz if you mount the tweeters high. If you don't have alot of dough for separates, Quart's coaxials are excellent and easy to install. This was a few years ago (around the first year Eclipse came on the scene), but I went through numerous amps while listening to the Quarts, and at the time, the Nakamichi completely blew the Soundstreams, Precision Power, etc. away in terms of being a good match up for the Quarts for transparancy, imaging, etc.. Experiment with phasing. I found the sound improved tremendously when I reversed the phasing on the tweeters. Then reversing the phasing on one side of the car, post crossover! Electrically, the two sides were out of phase, but acoustically, it compensated for sitting off-center and the imaging went from fuzzy to spectacular. Without going overboard, a nice EQ with separate right and left channel controls can really help balance the frequency irregularities that are huge in a car between the right and left. Audio Control makes a nice unit...I think mine was the EQX...it has 13 bands for both and left channels. It fits under a seat nice, and makes a good line driver to an amp in the back, as the voltage (both input and output) is variable. I had connections that I could disconnect, then put longer power supply, ground, and RCAs to so I could set the unit on my lap and tune it.
